gjg66
gjg66
30-10-2017
Mathematics
contestada
Solve by substitution. Check
X+y=8
Y=x-2
Respuesta :
gormanmtoym02a
gormanmtoym02a
30-10-2017
x + y = 8
Replace y as y = y Insert x back into the original
x + x - 2 = 8 5 + y = 8
2x - 2 = 8 - 5 - 5
+ 2 + 2 y = 3
2x = 10 (5, 3)
--- ---
2 2
x = 5
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